#include<iostream>
using namespace std;
int main() {
    int n;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int max = a[0];
    for (int i = 1; i < n; i++) {
        if (a[i] > max) {
            max = a[i];
        }
    }
    cout  << 1 << 4 << endl;
    cout << "Maximum element is: " << max << endl;
    return 0;
}